Improvement in dampers



W. CULVEYHOUSE.

DAMPEB..

Patente@ Feb. 1,71876.`

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N. PErERs. Fiom-LITHOGRAPHER. wAslNGTON. vD. C.

UNITED STATES f A wrLLrAM oULvEYHoUsE,

PATENT OFFICE.

OF LIGONIER, INDIANA.

IMPROVEMENT |N-'D'AM1PERs- Specification forming part ofLetters PatentNo. l72v,9pl4, dated February 1, 1876 application tiled January'lil,1876.l

To all whom 'it may concern:

Be it known that I, WILLIAM GULVEY- HOUSE, of Ligonier, in the county of`Noble and State of Indiana, have invented certain new and usefulImprovements in Heat-Dampers for Flues and Heating-Drums; and I dohereby declare the following to be a full, clear, and exact description'ofv the invention, such as will enable others skilled in the. art to'which it pertains to make and use it,refer ence being had to theaccompanying drawings, which form part'of this specification.

My invention-relates to an improvement in h eat-dampers for lu'es andheating-drums, and for use' in other similar localities; and consists inthe combination of a large central'diskorplate, which fills the iue ordrum whenplaced, across it, this central plate or "disk having anopening throughit, and in combination with the said central large disk-,ofan upper and a lower' smaller disk, each continuous or not perforated.The three are so constructed that when placed across the iiue or drumthe products of combustion will pass outward around the first smallerdisk, then in through the central opening of the central disk, and outaround the edge of theh other small disk; the three disks being unitedin such a manner that when one of them is turned from its positionacross the line 'of the draft into a'position in the line of the draftall three ofthe said disks will turn simultaneously, and come intosubstantially the same plane, as will be hereinafter more fullydescribed.

In the drawings, Figure 1 represents a vertical section by a planecontaining the hingerods, and showing the disks in a position across theline of draft. Fig. 2 represents a similar sectional view, showing thedisks in a position in the line of draft, or opened,

It is well known that the products of combustion, in passing through aflue or drum, are impeded along that portion adjacent to the Walls otthe drum by the friction against said walls, and that the main draftwill take place through the center of the tlue or drum -withoutimparting their heat to the drum, whereby it may be radiated into theapartment. So, also, it is well known that the products of com- .bustiouin a furnace, or in other localities where all the heat is desired to beutilized-as,

forin stauce,beneath aboiler the furnace-walls and boundaries generallycreate and maintain adjacent to themselves a coolerlstratum, whichprevents the products of combustion .fromexpending all their heat upontherboiler or other object desired to be heated, and Ythe highly,

heated `products therefore pass into the escape-hues in an unobstructedcourse, andl es' cape 'therefrom without being utilized. It is theobject of this' Yinvention to.avoid bothl these difliculties, andthisinventiou re-y lates to a particular means 4employed for effectingthese purposes.

A is the -large central disk or plate, which,

whenthrown across the line ,or drum, lls it.

It is, perforated by a central opening, a.. B B

are upperandlQWersmallercontinuous or unbroken disks. D are the Irods orlinks which unite the three disks, and which govern their action. is ahandle rigidlyattached to one of the said disks, whereby the said disksmay bethrown across the line of draft, or brought into substantially thesame plane in the line of draft, according as it is desired to createmore heat or less heat, respectively. It is apparent that thisimprovement is equally applicable in square or rectangular drums orilues, and in cylindrical or conical drums and lines. So, also, it isapparent thatthe same handle E may govern a set of the said disks,

as shown in the drawings; or, by extending the-connecting rods or linksD, the same handle may govern two or more sets of the said disks, ascircumstances may require. So, also, it is apparent that many devicesmay be employedY whereby, by turning one of thel disks. all of the diskswill be brought into substantially the same plane, the links or rods Dbeing simply one means for eiiectin g the purpose. It will be seen,also, that this method of turning the disks, whereby each' disk isrevolved, as it were, about one of its horizontal lines as an axis,enables the entire series to be properly operated within 'a drum or flueof sufficient size to permit any one .of the large disks to turn therein5 and it is also apparent that I am enabled to place the disks at anydesired distance apart, the said distance between' the disks notdepending in any degree upon the diameter of the ue or drum.

'In describing the operation ofthis damper I will first suppose it vtobe attached to a ra? diating-drum. Supposethe dampers or disks to beplaced in the position shown in Fig. 2, or open; in this position theypermit a free draft through the drum, and permit a great portion of theheated. products of combustion to escape into the flue above without theheat from the same being utilized. If it is desired to increase the heatthe dampers are turned across the drum into the position shown inFig. 1. The central course of the draft'is thus impeded by the disk B,and the heated products of combustion are dei'ected around Vthe edge ofthe said disk against the side of the drum; they are again deiected andpassed through the central opening a of .the disk A 5 then againdeect'ed outward around the upper dislrB against vthe drum, and thenceupward into the flue; or, if there be more than `disk or plate A, withopening a, and upper and lower smaller unbroken disks or plates B A B',the'whole series united by flexible joints, and arranged substantiallyas described, to

one series of said disks, the operation is repeated for each series, andthus the products of combustion are caused to expend all their heatdirectly upon the Wall of the drum.

The operation of the device in a furnace is substantially as followsSuppose this damper to be placed in the smoke-flue, as long as thedamper is opened, as in Fig. 2, the heated products will take a centralcourse through the furnaceand through the center of the Hue, and escapetherefrom, much of them being unburned, because, lying within the coolstratum around the boiler and around the adi jacent walls of thefurnace, they are not suiline of central draft. If this damper is throwninto the position shown in Fig. 1, the conditions are immediatelychanged 5 suicient draft is still maintained in the furnace, but thiscentral line of draft'is broken up, and the intenselyheated products ofcombustion are caused t0 back up and mingle with what Wevhave termed thecooler stratum, causing a more perfect combustion of the carbon from thefuel, and also causing a much greater heat to be expended upon theadjacent boiler and other surfaces, as, by a mingling of the products ofcombustion, the temperature in all parts of the furnace iskeptsubstantially at a uniform degree. Y.

A heat-damper consisting of central large bringall the disks into nearlythe same plane forth, and for the purposes described.

' In testimony whereof I have signed my name to this specification inthe presence of two subscribing witnesses. 1 l WILLIAM CULVEYIEIO USE.

' Witnesses:

DAVID SIMMoNs, J oHN M. CHAPMAN.

